osquery-defense-kit/detection/evasion/hidden-executable.sql

137 lines
3.8 KiB
SQL

-- Programs running with a hidden file path or process name
--
-- references:
-- * https://attack.mitre.org/techniques/T1564/001/ (Hide Artifacts: Hidden Files and Directories)
--
-- tags: transient
-- platform: posix
SELECT
f.directory,
f.btime,
p0.start_time,
RTRIM(
COALESCE(
REGEX_MATCH (
REPLACE(f.directory, u.directory, '~'),
'([/~].*?/.*?)/',
1
),
f.directory
),
"/"
) AS top2_dir,
COALESCE(
REGEX_MATCH (
REPLACE(f.directory, u.directory, '~'),
'([/~].*?/.*?/.*?)/',
1
),
REPLACE(f.directory, u.directory, '~')
) AS top3_dir,
REPLACE(f.directory, u.directory, '~') AS homedir,
REPLACE(f.path, u.directory, '~') AS homepath,
-- Child
p0.pid AS p0_pid,
p0.path AS p0_path,
p0.name AS p0_name,
p0.cmdline AS p0_cmd,
p0.cwd AS p0_cwd,
p0.cgroup_path AS p0_cgroup,
p0.euid AS p0_euid,
p0_hash.sha256 AS p0_sha256,
-- Parent
p0.parent AS p1_pid,
p1.path AS p1_path,
p1.name AS p1_name,
p1.euid AS p1_euid,
p1.cmdline AS p1_cmd,
p1_hash.sha256 AS p1_sha256,
-- Grandparent
p1.parent AS p2_pid,
p2.name AS p2_name,
p2.path AS p2_path,
p2.cmdline AS p2_cmd,
p2_hash.sha256 AS p2_sha256
FROM
processes p0
LEFT JOIN file f ON p0.path = f.path
LEFT JOIN users u ON f.uid = u.uid
LEFT JOIN hash p0_hash ON p0.path = p0_hash.path
LEFT JOIN processes p1 ON p0.parent = p1.pid
LEFT JOIN hash p1_hash ON p1.path = p1_hash.path
LEFT JOIN processes p2 ON p1.parent = p2.pid
LEFT JOIN hash p2_hash ON p2.path = p2_hash.path
WHERE
(
p0.name LIKE '.%'
OR f.filename LIKE '.%'
OR f.directory LIKE '%/.%'
)
AND NOT homedir LIKE '~/.%/bin'
AND NOT homedir LIKE '~/%/node_modules/.bin'
AND NOT homedir LIKE '~/.%/%x64/%'
AND NOT homedir LIKE '%/node_modulues/.%'
AND NOT homepath LIKE '~/%arm64%'
AND NOT homepath LIKE '~/%x86_64%'
AND NOT top3_dir LIKE '~/.%/extensions'
AND NOT top2_dir IN (
'~/.cursor',
'~/.dropbox-dist',
'~/.fzf',
'~/.goenv',
'~/.gradle/jdks',
'~/.krew',
'~/.local',
'~/.pnpm',
'~/.pulumi',
'~/.rbenv',
'~/.rustup',
'~/.sdkman',
'~/.supermaven',
'~/.terraform',
'~/.tflint.d',
'~/.vs-kubernetes',
'~/chainguard-images',
'~/Code',
'~/Projects',
'~/code',
'~/src'
)
AND NOT top3_dir IN (
'~/.bin',
'~/.vscode/cli',
'~/.bin-unwrapped',
'~/.cache/gitstatus',
'~/.cache/selenium',
'~/.config/bluejeans-v2',
'~/.config/Code',
'~/.config/nvm',
'~/.devpod/contexts',
'~/.docker/cli-plugins',
'~/.dotfiles/.local',
'/home/linuxbrew/.linuxbrew',
'~/.linuxbrew/Cellar',
'~/node_modules/.bin',
'~/.nvm/versions',
'~/.pyenv/versions',
'~/.steampipe/db',
'~/thinkorswim/.install4j'
)
AND NOT f.directory LIKE '/Applications/Corsair iCUE5 Software/.cuepkg-%'
AND NOT f.directory LIKE '%/Applications/PSI Bridge Secure Browser.app/Contents/Resources/.apps/darwin/%'
AND NOT f.directory LIKE '/var/home/linuxbrew/.linuxbrew/Cellar/%'
AND NOT f.directory LIKE '/Volumes/com.getdropbox.dropbox-%'
AND NOT f.directory LIKE '%/.terraform/%'
AND NOT f.path LIKE '/nix/store/%/%-wrapped'
AND NOT (
f.path LIKE '/nix/store/%'
AND p0.name LIKE '%-wrappe%'
)
AND NOT homedir LIKE '~/.Trash/1Password %.app/Contents/Library/LoginItems/1Password Extension Helper.app/Contents/MacOS'
AND NOT homedir LIKE '~/.local/share/AppImage/ZenBrowser.AppImage'
AND NOT homedir LIKE '~/Library/Application Support/Code/User/globalStorage/ms-dotnettools.vscode-dotnet-runtime/.dotnet/%'
AND NOT homedir LIKE '%/.Trash/1Password %.app/Contents/Library/LoginItems/1Password Extension Helper.app/Contents/MacOS'
AND NOT homedir LIKE '%/.Trash/Logi Options.app/Contents/Support/LogiMgrDaemon.app/Contents/MacOS'
GROUP BY
f.path